Do you need building consent to replace shower wall linings in NZ?
Planning a bathroom renovation? Here’s what to know before replacing your shower walls with AliPanel Wet Wall.
If you’re updating an existing shower, you may not need building consent to replace the internal wall linings. However, it depends on the complete scope of your renovation, not simply whether you choose tiles or wet wall panels.
Can you replace shower wall linings without consent?
Under Schedule 1, exemption 12 of the New Zealand Building Act 2004, certain work involving internal wall, ceiling and floor linings in an existing dwelling may be exempt from building consent.
This means replacing existing shower wall finishes with AliPanel Wet Wall or another suitable lining material may not require consent, provided no other consent-triggering work is involved.
What if you have an existing shower base?
Replacing wall linings above an existing proprietary shower base may be a practical way to update your bathroom.
Your project may qualify for an exemption when:
- You’re working in an existing dwelling.
- You’re replacing internal shower wall linings.
- The shower base is retained or replaced like-for-like.
- The shower remains in the same general location.
- No structural framing, bracing or fire separations are affected.
- Any plumbing work meets the relevant exemption requirements.
These are examples to help you assess the scope, rather than a complete exemption checklist. Confirm your project’s requirements with your local council or a qualified building practitioner.
| Type of work | General position |
|---|---|
| Replacing shower wall linings above an existing base | Often exempt |
| Installing AliPanel above a proprietary shower base | Often exempt if no other consent-triggering work is involved |
| Tiling walls above a proprietary shower base | May also be exempt |
| Replacing an existing shower with a tiled shower | May be exempt, depending on the complete scope |
| Altering floor structure, joists or load-bearing framing | Consent may be required |
| Adding a shower that increases the number of sanitary fixtures | Consent is likely to be required |
| Work affecting fire separations or specified systems | Consent may be required |
Do showers always need consent?
No. MBIE Determination 2024/054 found that the wall lining systems of two tiled showers in an existing dwelling, including their waterproof membranes, were covered by Schedule 1 exemption 12. Both showers had acrylic floors.
However, this does not mean every tiled shower is exempt. Structural alterations, additional fixtures or work affecting specified systems may still require consent.
Why choose AliPanel Wet Wall?
AliPanel Wet Wall offers a modern alternative to traditional tiled shower walls, with:
- Grout-free finish: A clean, contemporary look without traditional grout lines.
- Easy-to-clean surface: AliPanel’s smooth, waterproof surface gives mould and mildew fewer places to take hold and makes them easier to wipe away. Practical for everyday bathroom maintenance.
- Contemporary designs: A range of colours and finishes.
- Large-format panels: Fewer joins, depending on your layout.
- Practical installation: An alternative to the multiple stages involved in traditional tiling.
No consent does not mean no requirements
Even when consent isn’t required, building work must still comply with the New Zealand Building Code. The showers considered in Determination 2024/054 were nevertheless found to breach the Building Code’s internal moisture requirements.
Ensure the substrate is suitable, follow AliPanel’s installation instructions, and correctly treat joins, corners, edges and penetrations. Any required plumbing or electrical work must be completed by authorised tradespeople.
The simple answer
If you’re updating an existing shower and keeping the same shower base, you may not need building consent to replace the walls with AliPanel Wet Wall.
AliPanel offers a modern, grout-free alternative to traditional tiling, but every renovation should be assessed individually.
Check the complete scope of your project with your local council or a suitably qualified professional before starting.
Ready to start your renovation?
Explore AliPanel Wet Wall from Pyramid Panels.
Shop AliPanel Wet Wall | Order a sample | Talk to our team
Further information
- MBIE guidance: Internal linings and finishes in an existing dwelling
- MBIE Determination 2024/054: Two tiled showers (PDF)
- MBIE guidance: Check if you need consents
This article provides general information only and is not legal, design or building compliance advice. Consent requirements depend on the complete scope of each project. Check with your local council or a suitably qualified building professional before starting work.